In the Name of the Rebellion: Part 2 - S4-E4
Other mistake: When Saw contacts his lieutenant Edrio for a pickup after wiring the giant kyber crystal to the hyperdrive, he tells him to dock at the hatch by the starboard engines. Later, when Edrio does arrive, he docks at a hatch on the left, or port, side of the ship. Starboard refers to the right side of a ship.
Other mistake: In this episode, Hera's ears are shown for the first time thanks to her civilian disguise. As for all Twi'lek women, they're shaped like cones. However, they are too large to fit under the ear coverings of the pilot's cap she usually wears, when they've been shown on the few occasions she hasn't been wearing goggles or a pilot's visor.
Answer: Not every military vehicle looks or is built exactly the same, even if they perform similar functions. Different defense contractors would have their own particular designs. Newer vehicles often have improvements or additional capabilities added.
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